Fig. 4
From: Iliosacral Bone Tumor Resection Using Cannulated Screw-Guided Gigli Saw - A Novel Technique
A-G. The number 10 patient was diagnosed of chondrosarcoma in right pelvis invading sacrum. Preoperative MRI (A) showed tumor thrombus in iliac vein (arrow). Following sacral laminectomy, affected nerve roots (S1-3) were identified and ligated during posterior approach. Then the canulated screw as placed (B). Intraoperatvie photo of anterior approach (C) showed the canulated screw advanced through the anterior sacrum under direct observation. Then the Gigli saw was placed and sagittal osteotomy at sacrum was performed (D). X-rays (E and F) of the specimen were shown. A custom-made pelvic endoprosthesis combined with SRS were used to reconstruct the defect (G)